The Strainer,sediment, cataloged under National Stock Number 4730-01-481-5287, is classified within Federal Supply Class 4730 (Hose, Pipe, Tube, Lubrication, and Railing Fittings) of the Pipe, Tubing, Hose, and Fittings group. The manufacturer of record is Haywardindl. Products, Inc.. Government technical data includes 9 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 4730-01-481-5287 |
| Primary Part Number | ST051020BT11A |
| Item Name | Strainer,sediment |
| FSC / FSG | 4730 / 47 — Hose, Pipe, Tube, Lubrication, and Railing Fittings |
| Manufacturer | Haywardindl. Products, Inc. |
| Status | ACTIVE |
| Filtering Media Design | MESH ALL FILTERING MEDIA RESPONSES |
| Mounting Hole Quantity | 4 |
| Distance From Bottom of Body to Center of Inlet | 24.000 INCHES NOMINAL IN |
| Body Width | 9.880 INCHES NOMINAL IN |
| Style Designator | TWIN STRAINER W/CLAMPED COVER |
| Thread Direction | RIGHT-HAND |
| Body Length | 18.880 INCHES NOMINAL IN |
| Material | COPPER ALLOY BODY |
| Mounting Type | UNTHREADED HOLE BOTTOM |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| ST051020BT11A PRIMARY | Haywardindl. Products, Inc. (USA) |
| Reference | Meaning |
|---|---|
| SD051085 | D/9 Drawing number reference only Haywardindl. Products, Inc. |
NSN 4730-01-481-5287 is a Strainer,sediment, manufactured by Haywardindl. Products, Inc., classified under FSC 4730, Hose, Pipe, Tube, Lubrication, and Railing Fittings. Status: active.
NSN 4730-01-481-5287 has 1 manufacturer part number on file: ST051020BT11A (Haywardindl. Products, Inc.).
1 possible match (shared part number, not a government interchangeability claim): 4730-01-553-6922. Verify interchangeability with system specifications before substitution.
Key specifications for ST051020BT11A: Filtering Media Design: MESH ALL FILTERING MEDIA RESPONSES; Mounting Hole Quantity: 4; Distance From Bottom of Body to Center of Inlet: 24.000 INCHES NOMINAL IN; Body Width: 9.880 INCHES NOMINAL IN. 9 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.